Scientists make up science theories. Some of these theories are evolution, relativity, big bang, and black hole. No body knows if these theories are factual or not. If they were factual, they would become science law, and not remain theories.
Some scientists and the media say that some of these theories are factual. But these theories are not known to be factual. We can tell that the theories are not factual, because they are science theories, not science laws.
When people believe and trust that these theories are factual, because they believe the scientists and media who are lying to them, this part of science has become religion for them. So, as you say, there is religion that is poison for the brain. It is science religion.